@bernhard thank you for your input and suggestions, and for welcoming me to this forum 😊.
Per your suggestions, I got rid of the /site/assets/cache folder (I do have backups of everything so all good there 😉).
I renamed the /site/modules/MarkupSitemapXML to .MarkupSitemapXML.
This is my current error message. Do you think I can fix this with my limited abilities?
2025-06-03 21:30:02 ? http://monarchandco.com/ Fatal Error: Uncaught Error: Class "Process" not found in /home/monajywn/public_html/site/modules/ProcessRedirects/ProcessRedirects.module:3 Stack trace: #0 /home/monajywn/public_html/wire/core/ModulesFiles.php(328): include_once() #1 /home/monajywn/public_html/wire/core/ModulesLoader.php(595): ProcessWire\ModulesFiles->includeModuleFile() #2 /home/monajywn/public_html/wire/core/ModulesLoader.php(414): ProcessWire\ModulesLoader->loadModule() #3 /home/monajywn/public_html/wire/core/Modules.php(329): ProcessWire\ModulesLoader->loadPath() #4 /home/monajywn/public_html/wire/core/ProcessWire.php(558): ProcessWire\Modules->init() #5 /home/monajywn/public_html/wire/core/ProcessWire.php(316): ProcessWire\ProcessWire->load() #6 /home/monajywn/public_html/index.php(52): ProcessWire\ProcessWire->__construct() #7 {main} thrown (line 3 of /home/monajywn/public_html/site/modules/ProcessRedirects/ProcessRedirects.module)